/*
 * Copyright 2006 Robert Burrell Donkin
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */ 
package rat.report.xml.visitor.report;

import java.io.IOException;

import rat.element.ElementVisitorImpl;
import rat.report.ReportFailedRuntimeException;
import rat.report.xml.writer.IXmlWriter;

public abstract class AbstractXmlReportVisitor  extends ElementVisitorImpl {

    private final String messagePrefix;
    private final IXmlWriter writer;
    
    public AbstractXmlReportVisitor(final String reportName, final IXmlWriter writer) {
        this.messagePrefix = "[" + reportName +"] ";
        this.writer = writer;
    }
    
    protected void openElement(CharSequence elementName) {
        try {
            writer.openElement(elementName);
        } catch (IOException e) {
            // Can't recover
            throw new ReportFailedRuntimeException(messagePrefix + "cannot open element", e);
        }
    }

    protected void attribute(CharSequence name, CharSequence value) {
        try {
            writer.attribute(name, value);
        } catch (IOException e) {
            // Can't recover
            throw new ReportFailedRuntimeException(messagePrefix + "cannot write attribute", e);
        }
    }

    protected void content(CharSequence content) {
        try {
            writer.content(content);
        } catch (IOException e) {
            // Can't recover
            throw new ReportFailedRuntimeException(messagePrefix + "cannot write content", e);
        }
    }
    
    protected void closeElement() {
        try {
            writer.closeElement();
        } catch (IOException e) {
            // Can't recover
            throw new ReportFailedRuntimeException(messagePrefix + "cannot close element", e);
        }
    }    
}
